Once upon a time, there lived a princess named Clare. While she dreamed of marrying Prince Camille, in a wicked twist of fate, she is forced into a marriage of convenience with a man she despises, Gisele Goldie...

It is the Taisho Era.Sayo, who was born as the "bird in a cage" of the Tenkanji family, one of the most prestigious families in the financial conglomerate world, had a secret that she hid. The curtain rises on...